Kilotest: Diagnoses of CSS invalid violation by HTML element 0 on Clean Air Task Force (CATF) page

Basics

About the page

• URL: https://www.catf.us/
• Tested 3 days ago on 2026-10-07 at 19:52 by job 261007T1941-eso
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 12
  • Violations: 697
  • Violators: 328
  • Issues: 52
• Download the full technical report (JSON)

About the issue

• Why it matters: Page cannot be properly displayed
• Priority: high
• Related WCAG standard: 4.1
• Reported by 1 rule engine (Html Checker)
• Violations: 3
• Violators: 1

About the violator

• Tag name: HTML
• Text: [not applicable]
• Start tag: <html class="js" lang="en">
• XPath: /html
• Bounding box: x = 0, y = 0, width = 1920, height = 7933
• Reported by Html Checker

Diagnoses

Here is how rule engines diagnose the CSS invalid issue for HTML element 0 of the Clean Air Task Force (CATF) page.

1. CSS: width: The types are incompatible. Extract: on--width)/100))}.wp-block-but

   Rule engine: Html Checker (World Wide Web Consortium)

   Rule: CSS: width: The types are incompatible.

2. CSS: transform: The types are incompatible. Extract: lightbox-scale))}to{transform:

   Rule engine: Html Checker (World Wide Web Consortium)

   Rule: CSS: transform: The types are incompatible.

3. CSS: transform: The types are incompatible. Extract: lightbox-scale));visibility:hi

   Rule engine: Html Checker (World Wide Web Consortium)

   Rule: CSS: transform: The types are incompatible.